drivers/scsi/g_NCR5380.c

/* */
This source file includes following definitions.
generic_NCR5380_setup
generic_NCR53C400_setup
generic_NCR5380_detect
generic_NCR5380_info
generic_NCR5380_release_resources
generic_NCR5380_biosparam
NCR5380_pread
NCR5380_pwrite
sprint_opcode
sprint_command
sprint_Scsi_Cmnd
generic_NCR5380_proc_info
   1 /*
   2  * Generic Generic NCR5380 driver
   3  *      
   4  * Copyright 1993, Drew Eckhardt
   5  *      Visionary Computing
   6  *      (Unix and Linux consulting and custom programming)
   7  *      drew@colorado.edu
   8  *      +1 (303) 440-4894
   9  *
  10  * NCR53C400 extensions (c) 1994,1995,1996, Kevin Lentin
  11  *    K.Lentin@cs.monash.edu.au
  12  *
  13  * ALPHA RELEASE 1. 
  14  *
  15  * For more information, please consult 
  16  *
  17  * NCR 5380 Family
  18  * SCSI Protocol Controller
  19  * Databook
  20  *
  21  * NCR Microelectronics
  22  * 1635 Aeroplaza Drive
  23  * Colorado Springs, CO 80916
  24  * 1+ (719) 578-3400
  25  * 1+ (800) 334-5454
  26  */
  27 
  28 /* 
  29  * TODO : flesh out DMA support, find some one actually using this (I have
  30  *      a memory mapped Trantor board that works fine)
  31  */
  32 
  33 /*
  34  * Options :
  35  *
  36  * PARITY - enable parity checking.  Not supported.
  37  *
  38  * SCSI2 - enable support for SCSI-II tagged queueing.  Untested.
  39  *
  40  * USLEEP - enable support for devices that don't disconnect.  Untested.
  41  *
  42  * The card is detected and initialized in one of several ways : 
  43  * 1.  With command line overrides - NCR5380=port,irq may be 
  44  *     used on the LILO command line to override the defaults.
  45  *
  46  * 2.  With the GENERIC_NCR5380_OVERRIDE compile time define.  This is 
  47  *     specified as an array of address, irq, dma, board tuples.  Ie, for
  48  *     one board at 0x350, IRQ5, no dma, I could say  
  49  *     -DGENERIC_NCR5380_OVERRIDE={{0xcc000, 5, DMA_NONE, BOARD_NCR5380}}
  50  * 
  51  * -1 should be specified for no or DMA interrupt, -2 to autoprobe for an 
  52  *      IRQ line if overridden on the command line.
  53  */
  54  
  55 /*
  56  * $Log: generic_NCR5380.c,v $
  57  */
  58 
  59 #define AUTOPROBE_IRQ
  60 #define AUTOSENSE
  61 
  62 #include <linux/config.h>
  63 
  64 #ifdef CONFIG_SCSI_GENERIC_NCR53C400
  65 #define NCR53C400_PSEUDO_DMA 1
  66 #define PSEUDO_DMA
  67 #define NCR53C400
  68 #define NCR5380_STATS
  69 #undef NCR5380_STAT_LIMIT
  70 #endif
  71 #if defined(CONFIG_SCSI_G_NCR5380_PORT) && defined(CONFIG_SCSI_G_NCR5380_MEM)
  72 #error You can not configure the Generic NCR 5380 SCSI Driver for memory mapped I/O and port mapped I/O at the same time (yet)
  73 #endif
  74 #if !defined(CONFIG_SCSI_G_NCR5380_PORT) && !defined(CONFIG_SCSI_G_NCR5380_MEM)
  75 #error You must configure the Generic NCR 5380 SCSI Driver for one of memory mapped I/O and port mapped I/O.
  76 #endif
  77 
  78 #include <asm/system.h>
  79 #include <asm/io.h>
  80 #include <linux/signal.h>
  81 #include <linux/sched.h>
  82 #include <linux/blk.h>
  83 #include "scsi.h"
  84 #include "hosts.h"
  85 #include "g_NCR5380.h"
  86 #include "NCR5380.h"
  87 #include "constants.h"
  88 #include "sd.h"
  89 #include<linux/stat.h>
  90 
  91 struct proc_dir_entry proc_scsi_g_ncr5380 = {
  92     PROC_SCSI_GENERIC_NCR5380, 9, "g_NCR5380",
  93     S_IFDIR | S_IRUGO | S_IXUGO, 2
  94 };
  95 
  96 static struct override {
  97         NCR5380_implementation_fields;
  98     int irq;
  99     int dma;
 100     int board;  /* Use NCR53c400, Ricoh, etc. extensions ? */
 101 } overrides 
 102 #ifdef GENERIC_NCR5380_OVERRIDE 
 103     [] = GENERIC_NCR5380_OVERRIDE
 104 #else
 105     [1] = {{0,},};
 106 #endif
 107 
 108 #define NO_OVERRIDES (sizeof(overrides) / sizeof(struct override))
 109 
 110 /*
 111  * Function : static internal_setup(int board, char *str, int *ints)
 112  *
 113  * Purpose : LILO command line initialization of the overrides array,
 114  * 
 115  * Inputs : board - either BOARD_NCR5380 for a normal NCR5380 board, 
 116  *      or BOARD_NCR53C400 for a NCR53C400 board. str - unused, ints - 
 117  *      array of integer parameters with ints[0] equal to the number of ints.
 118  *
 119  */
 120 
 121 static void internal_setup(int board, char *str, int *ints) {
 122     static int commandline_current = 0;
 123     switch (board) {
 124     case BOARD_NCR5380:
 125         if (ints[0] != 2 && ints[0] != 3) {
 126             printk("generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n");
 127             return;
 128         }
 129     case BOARD_NCR53C400:
 130         if (ints[0] != 2) {
 131             printk("generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n");
 132             return;
 133         }
 134     }
 135 
 136     if (commandline_current < NO_OVERRIDES) {
 137         overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type)ints[1];
 138         overrides[commandline_current].irq = ints[2];
 139         if (ints[0] == 3) 
 140             overrides[commandline_current].dma = ints[3];
 141         else 
 142             overrides[commandline_current].dma = DMA_NONE;
 143         overrides[commandline_current].board = board;
 144             ++commandline_current;
 145     }
 146 }
 147 
 148 /*
 149  * Function : generic_NCR5380_setup (char *str, int *ints)
 150  *
 151  * Purpose : LILO command line initialization of the overrides array,
 152  * 
 153  * Inputs : str - unused, ints - array of integer parameters with ints[0] 
 154  *      equal to the number of ints.
 155  */
 156 
 157 void generic_NCR5380_setup (char *str, int *ints) {
     /*  */
 158     internal_setup (BOARD_NCR5380, str, ints);
 159 }
 160 
 161 /*
 162  * Function : generic_NCR53C400_setup (char *str, int *ints)
 163  *
 164  * Purpose : LILO command line initialization of the overrides array,
 165  * 
 166  * Inputs : str - unused, ints - array of integer parameters with ints[0] 
 167  *      equal to the number of ints.
 168  */
 169 
 170 void generic_NCR53C400_setup (char *str, int *ints) {
     /*  */
 171     internal_setup (BOARD_NCR53C400, str, ints);
 172 }
 173 
 174 /* 
 175  * Function : int generic_NCR5380_detect(Scsi_Host_Template * tpnt)
 176  *
 177  * Purpose : initializes generic NCR5380 driver based on the 
 178  *      command line / compile time port and irq definitions.
 179  *
 180  * Inputs : tpnt - template for this SCSI adapter.
 181  * 
 182  * Returns : 1 if a host adapter was found, 0 if not.
 183  *
 184  */
 185 
 186 int generic_NCR5380_detect(Scsi_Host_Template * tpnt) {
     /*  */
 187     static int current_override = 0;
 188     int count;
 189     int flags = 0;
 190     struct Scsi_Host *instance;
 191 
 192     tpnt->proc_dir = &proc_scsi_g_ncr5380;
 193 
 194     for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
 195         if (!(overrides[current_override].NCR5380_map_name))
 196             continue;
 197 
 198         switch (overrides[current_override].board) {
 199         case BOARD_NCR5380:
 200             flags = FLAG_NO_PSEUDO_DMA;
 201             break;
 202         case BOARD_NCR53C400:
 203             flags = FLAG_NCR53C400;
 204             break;
 205         }
 206 
 207         instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
 208         instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name;
 209 
 210         NCR5380_init(instance, flags);
 211 
 212         if (overrides[current_override].irq != IRQ_AUTO)
 213             instance->irq = overrides[current_override].irq;
 214         else 
 215             instance->irq = NCR5380_probe_irq(instance, 0xffff);
 216 
 217         if (instance->irq != IRQ_NONE) 
 218             if (request_irq(instance->irq, generic_NCR5380_intr, SA_INTERRUPT, "NCR5380", NULL)) {
 219                 printk("scsi%d : IRQ%d not free, interrupts disabled\n", 
 220                     instance->host_no, instance->irq);
 221                 instance->irq = IRQ_NONE;
 222             } 
 223 
 224         if (instance->irq == IRQ_NONE) {
 225             printk("scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
 226             printk("scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
 227         }
 228 
 229         printk("scsi%d : at " STRVAL(NCR5380_map_name) " 0x%x", instance->host_no, (unsigned int)instance->NCR5380_instance_name);
 230         if (instance->irq == IRQ_NONE)
 231             printk (" interrupts disabled");
 232         else 
 233             printk (" irq %d", instance->irq);
 234         printk(" options CAN_QUEUE=%d  CMD_PER_LUN=%d release=%d",
 235             CAN_QUEUE, CMD_PER_LUN, GENERIC_NCR5380_PUBLIC_RELEASE);
 236         NCR5380_print_options(instance);
 237         printk("\n");
 238 
 239         ++current_override;
 240         ++count;
 241     }
 242     return count;
 243 }
 244 
 245 const char * generic_NCR5380_info (struct Scsi_Host* host) {
     /*  */
 246     static const char string[]="Generic NCR5380/53C400 Driver";
 247     return string;
 248 }
 249 
 250 int generic_NCR5380_release_resources(struct Scsi_Host * instance)
     /*  */
 251 {
 252     NCR5380_local_declare();
 253 
 254     NCR5380_setup(instance);
 255 
 256     free_irq(instance->irq, NULL);
 257 
 258         return 0;
 259 }
 260 
 261 #ifdef BIOSPARAM
 262 /*
 263  * Function : int generic_NCR5380_biosparam(Disk * disk, kdev_t dev, int *ip)
 264  *
 265  * Purpose : Generates a BIOS / DOS compatible H-C-S mapping for 
 266  *      the specified device / size.
 267  * 
 268  * Inputs : size = size of device in sectors (512 bytes), dev = block device
 269  *      major / minor, ip[] = {heads, sectors, cylinders}  
 270  *
 271  * Returns : always 0 (success), initializes ip
 272  *      
 273  */
 274 
 275 /* 
 276  * XXX Most SCSI boards use this mapping, I could be incorrect.  Some one
 277  * using hard disks on a trantor should verify that this mapping corresponds
 278  * to that used by the BIOS / ASPI driver by running the linux fdisk program
 279  * and matching the H_C_S coordinates to what DOS uses.
 280  */
 281 
 282 int generic_NCR5380_biosparam(Disk * disk, kdev_t dev, int *ip)
     /*  */
 283 {
 284   int size = disk->capacity;
 285   ip[0] = 64;
 286   ip[1] = 32;
 287   ip[2] = size >> 11;
 288   return 0;
 289 }
 290 #endif
 291 
 292 #if NCR53C400_PSEUDO_DMA
 293 static inline int NCR5380_pread (struct Scsi_Host *instance, unsigned char *dst,    int len)
     /*  */
 294 {
 295     int blocks = len / 128;
 296     int start = 0;
 297     int i;
 298     int bl;
 299     NCR5380_local_declare();
 300 
 301     NCR5380_setup(instance);
 302 
 303 #if (NDEBUG & NDEBUG_C400_PREAD)
 304     printk("53C400r: About to read %d blocks for %d bytes\n", blocks, len);
 305 #endif
 306 
 307     NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR);
 308     NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
 309     while (1) {
 310     
 311 #if (NDEBUG & NDEBUG_C400_PREAD)
 312         printk("53C400r: %d blocks left\n", blocks);
 313 #endif
 314 
 315         if ((bl=NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
 316 #if (NDEBUG & NDEBUG_C400_PREAD)
 317             if (blocks)
 318                 printk("53C400r: blocks still == %d\n", blocks);
 319             else
 320                 printk("53C400r: Exiting loop\n");
 321 #endif
 322             break;
 323         }
 324 
 325 #if 1
 326         if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
 327             printk("53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
 328             return -1;
 329         }
 330 #endif
 331 
 332 #if (NDEBUG & NDEBUG_C400_PREAD)
 333         printk("53C400r: Waiting for buffer, bl=%d\n", bl);
 334 #endif
 335 
 336         while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
 337             ;
 338 #if (NDEBUG & NDEBUG_C400_PREAD)
 339         printk("53C400r: Transferring 128 bytes\n");
 340 #endif
 341 
 342 #ifdef CONFIG_SCSI_G_NCR5380_PORT
 343         for (i=0; i<128; i++)
 344             dst[start+i] = NCR5380_read(C400_HOST_BUFFER);
 345 #else
 346         /* implies CONFIG_SCSI_G_NCR5380_MEM */
 347         memmove(dst+start,NCR53C400_host_buffer+NCR5380_map_name,128);
 348 #endif
 349         start+=128;
 350         blocks--;
 351     }
 352 
 353 #if (NDEBUG & NDEBUG_C400_PREAD)
 354     printk("53C400r: EXTRA: Waiting for buffer\n");
 355 #endif
 356     while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
 357         ;
 358 
 359 #if (NDEBUG & NDEBUG_C400_PREAD)
 360     printk("53C400r: Transferring EXTRA 128 bytes\n");
 361 #endif
 362 #ifdef CONFIG_SCSI_G_NCR5380_PORT
 363         for (i=0; i<128; i++)
 364             dst[start+i] = NCR5380_read(C400_HOST_BUFFER);
 365 #else
 366         /* implies CONFIG_SCSI_G_NCR5380_MEM */
 367         memmove(dst+start,NCR53C400_host_buffer+NCR5380_map_name,128);
 368 #endif
 369     start+=128;
 370     blocks--;
 371 
 372 #if (NDEBUG & NDEBUG_C400_PREAD)
 373     printk("53C400r: Final values: blocks=%d   start=%d\n", blocks, start);
 374 #endif
 375 
 376     if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
 377         printk("53C400r: no 53C80 gated irq after transfer");
 378 #if (NDEBUG & NDEBUG_C400_PREAD)
 379     else
 380         printk("53C400r: Got 53C80 interrupt and tried to clear it\n");
 381 #endif
 382 
 383 /* DON'T DO THIS - THEY NEVER ARRIVE!
 384     printk("53C400r: Waiting for 53C80 registers\n");
 385     while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG)
 386         ;
 387 */
 388 
 389     if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER))
 390         printk("53C400r: no end dma signal\n");
 391 #if (NDEBUG & NDEBUG_C400_PREAD)
 392     else
 393         printk("53C400r: end dma as expected\n");
 394 #endif
 395 
 396     NCR5380_write(MODE_REG, MR_BASE);
 397     NCR5380_read(RESET_PARITY_INTERRUPT_REG);
 398     return 0;
 399 }
 400                 
 401 static inline int NCR5380_pwrite (struct Scsi_Host *instance, unsigned char *src,    int len)
     /*  */
 402 {
 403     int blocks = len / 128;
 404     int start = 0;
 405     int i;
 406     int bl;
 407     NCR5380_local_declare();
 408 
 409     NCR5380_setup(instance);
 410 
 411 #if (NDEBUG & NDEBUG_C400_PWRITE)
 412     printk("53C400w: About to write %d blocks for %d bytes\n", blocks, len);
 413 #endif
 414 
 415     NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE);
 416     NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
 417     while (1) {
 418         if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
 419             printk("53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
 420             return -1;
 421         }
 422 
 423         if ((bl=NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
 424 #if (NDEBUG & NDEBUG_C400_PWRITE)
 425             if (blocks)
 426                 printk("53C400w: exiting loop, blocks still == %d\n", blocks);
 427             else
 428                 printk("53C400w: exiting loop\n");
 429 #endif
 430             break;
 431         }
 432 
 433 #if (NDEBUG & NDEBUG_C400_PWRITE)
 434         printk("53C400w: %d blocks left\n", blocks);
 435 
 436         printk("53C400w: waiting for buffer, bl=%d\n", bl);
 437 #endif
 438         while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
 439             ;
 440 
 441 #if (NDEBUG & NDEBUG_C400_PWRITE)
 442         printk("53C400w: transferring 128 bytes\n");
 443 #endif
 444 #ifdef CONFIG_SCSI_G_NCR5380_PORT
 445         for (i=0; i<128; i++)
 446             NCR5380_write(C400_HOST_BUFFER, src[start+i]);
 447 #else
 448         /* implies CONFIG_SCSI_G_NCR5380_MEM */
 449         memmove(NCR53C400_host_buffer+NCR5380_map_name,src+start,128);
 450 #endif
 451         start+=128;
 452         blocks--;
 453     }
 454     if (blocks) {
 455 #if (NDEBUG & NDEBUG_C400_PWRITE)
 456         printk("53C400w: EXTRA waiting for buffer\n");
 457 #endif
 458         while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
 459             ;
 460 
 461 #if (NDEBUG & NDEBUG_C400_PWRITE)
 462         printk("53C400w: transferring EXTRA 128 bytes\n");
 463 #endif
 464 #ifdef CONFIG_SCSI_G_NCR5380_PORT
 465         for (i=0; i<128; i++)
 466             NCR5380_write(C400_HOST_BUFFER, src[start+i]);
 467 #else
 468         /* implies CONFIG_SCSI_G_NCR5380_MEM */
 469         memmove(NCR53C400_host_buffer+NCR5380_map_name,src+start,128);
 470 #endif
 471         start+=128;
 472         blocks--;
 473     }
 474 #if (NDEBUG & NDEBUG_C400_PWRITE)
 475     else
 476         printk("53C400w: No EXTRA required\n");
 477 #endif
 478     
 479 #if (NDEBUG & NDEBUG_C400_PWRITE)
 480     printk("53C400w: Final values: blocks=%d   start=%d\n", blocks, start);
 481 #endif
 482 
 483 #if 0
 484     printk("53C400w: waiting for registers to be available\n");
 485     THEY NEVER DO!
 486     while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG)
 487         ;
 488     printk("53C400w: Got em\n");
 489 #endif
 490 
 491     /* Let's wait for this instead - could be ugly */
 492     /* All documentation says to check for this. Maybe my hardware is too
 493      * fast. Waiting for it seems to work fine! KLL
 494      */
 495     while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
 496         ;
 497 
 498     /*
 499      * I know. i is certainly != 0 here but the loop is new. See previous
 500      * comment.
 501      */
 502     if (i) {
 503 #if (NDEBUG & NDEBUG_C400_PWRITE)
 504         printk("53C400w: got 53C80 gated irq (last block)\n");
 505 #endif
 506         if (!((i=NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER))
 507             printk("53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n",i);
 508 #if (NDEBUG & NDEBUG_C400_PWRITE)
 509         else
 510             printk("53C400w: Got END OF DMA\n");
 511 #endif
 512     }
 513     else
 514         printk("53C400w: no 53C80 gated irq after transfer (last block)\n");
 515 
 516 #if 0
 517     if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) {
 518         printk("53C400w: no end dma signal\n");
 519     }
 520 #endif
 521 
 522 #if (NDEBUG & NDEBUG_C400_PWRITE)
 523     printk("53C400w: waiting for last byte...\n");
 524 #endif
 525     while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT))
 526         ;
 527 
 528 #if (NDEBUG & NDEBUG_C400_PWRITE)
 529     printk("53C400w:     got last byte.\n");
 530     printk("53C400w: pwrite exiting with status 0, whoopee!\n");
 531 #endif
 532     return 0;
 533 }
 534 #endif /* PSEUDO_DMA */
 535 
 536 #include "NCR5380.c"
 537 
 538 #define PRINTP(x) len += sprintf(buffer+len, x)
 539 #define ANDP ,
 540 
 541 static int sprint_opcode(char* buffer, int len, int opcode) {
     /*  */
 542     int start = len;
 543     PRINTP("0x%02x " ANDP opcode);
 544     return len-start;
 545 }
 546 
 547 static int sprint_command (char* buffer, int len, unsigned char *command) {
     /*  */
 548     int i,s,start=len;
 549     len += sprint_opcode(buffer, len, command[0]);
 550     for ( i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i)
 551         PRINTP("%02x " ANDP command[i]);
 552     PRINTP("\n");
 553     return len-start;
 554 }
 555 
 556 static int sprint_Scsi_Cmnd (char* buffer, int len, Scsi_Cmnd *cmd) {
     /*  */
 557     int start = len;
 558     PRINTP("host number %d destination target %d, lun %d\n" ANDP
 559        cmd->host->host_no ANDP
 560        cmd->target ANDP
 561        cmd->lun);
 562     PRINTP("        command = ");
 563     len += sprint_command (buffer, len, cmd->cmnd);
 564     return len-start;
 565 }
 566 
 567 const char *const private_scsi_device_types[] =
 568 {
 569     "Direct-Access    ",
 570     "Sequential-Access",
 571     "Printer          ",
 572     "Processor        ",
 573     "WORM             ",
 574     "CD-ROM           ",
 575     "Scanner          ",
 576     "Optical Device   ",
 577     "Medium Changer   ",
 578     "Communications   "
 579 };
 580 #define MAX_SCSI_DEVICE_CODE sizeof(private_scsi_device_types)/sizeof(char*)
 581 
 582 int generic_NCR5380_proc_info(char* buffer, char** start, off_t offset, int length, int hostno, int inout)
     /*  */
 583 {
 584     int len = 0;
 585     NCR5380_local_declare();
 586     unsigned char status;
 587     int i;
 588     struct Scsi_Host *scsi_ptr;
 589         Scsi_Device *dev;
 590     Scsi_Cmnd *ptr;
 591     struct NCR5380_hostdata *hostdata;
 592 
 593     cli();
 594 
 595     for (scsi_ptr = first_instance; scsi_ptr; scsi_ptr=scsi_ptr->next)
 596         if (scsi_ptr->host_no == hostno)
 597             break;
 598     NCR5380_setup(scsi_ptr);
 599     hostdata = (struct NCR5380_hostdata *)scsi_ptr->hostdata;
 600 
 601     PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name);
 602     PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE);
 603     PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE);
 604 #ifdef NCR53C400
 605     PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE);
 606     PRINTP("NCR53C400 card%s detected\n" ANDP  (((struct NCR5380_hostdata *)scsi_ptr->hostdata)->flags & FLAG_NCR53C400)?"":" not");
 607 # if NCR53C400_PSEUDO_DMA
 608     PRINTP("NCR53C400 pseudo DMA used\n");
 609 # endif
 610 #else
 611     PRINTP("NO NCR53C400 driver extensions\n");
 612 #endif
 613     PRINTP("Using %s mapping at %s 0x%x, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name);
 614     if (scsi_ptr->irq == IRQ_NONE)
 615         PRINTP("no interrupt\n");
 616     else
 617         PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq);
 618 
 619 #ifdef NCR5380_STATS
 620     if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue)
 621         PRINTP("There are commands pending, transfer rates may be crud\n");
 622     if (hostdata->pendingr)
 623         PRINTP("  %d pending reads" ANDP hostdata->pendingr);
 624     if (hostdata->pendingw)
 625         PRINTP("  %d pending writes" ANDP hostdata->pendingw);
 626     if (hostdata->pendingr || hostdata->pendingw)
 627         PRINTP("\n");
 628     for (dev = scsi_devices; dev; dev=dev->next) {
 629         if (dev->host == scsi_ptr) {
 630             unsigned long br = hostdata->bytes_read[dev->id];
 631             unsigned long bw = hostdata->bytes_write[dev->id];
 632             long tr = hostdata->time_read[dev->id] / HZ;
 633             long tw = hostdata->time_write[dev->id] / HZ;
 634 
 635             PRINTP("  T:%d %s " ANDP dev->id ANDP (dev->type < MAX_SCSI_DEVICE_CODE) ? private_scsi_device_types[(int)dev->type] : "Unknown");
 636             for (i=0; i<8; i++)
 637                 if (dev->vendor[i] >= 0x20)
 638                     *(buffer+(len++)) = dev->vendor[i];
 639             *(buffer+(len++)) = ' ';
 640             for (i=0; i<16; i++)
 641                 if (dev->model[i] >= 0x20)
 642                     *(buffer+(len++)) = dev->model[i];
 643             *(buffer+(len++)) = ' ';
 644             for (i=0; i<4; i++)
 645                 if (dev->rev[i] >= 0x20)
 646                     *(buffer+(len++)) = dev->rev[i];
 647             *(buffer+(len++)) = ' ';
 648                                     
 649             PRINTP("\n%10ld kb read    in %5ld secs" ANDP br/1024 ANDP tr);
 650             if (tr)
 651                 PRINTP(" @ %5ld bps" ANDP br / tr); 
 652 
 653             PRINTP("\n%10ld kb written in %5ld secs" ANDP bw/1024 ANDP tw);
 654             if (tw)
 655                 PRINTP(" @ %5ld bps" ANDP bw / tw); 
 656             PRINTP("\n");
 657         }
 658     }
 659 #endif
 660         
 661     status = NCR5380_read(STATUS_REG);
 662     if (!(status & SR_REQ))
 663         PRINTP("REQ not asserted, phase unknown.\n");
 664     else {
 665         for (i = 0; (phases[i].value != PHASE_UNKNOWN) &&
 666                     (phases[i].value != (status & PHASE_MASK)); ++i)
 667             ;
 668         PRINTP("Phase %s\n" ANDP phases[i].name);
 669     }
 670 
 671     if (!hostdata->connected) {
 672         PRINTP("No currently connected command\n");
 673     } else {
 674         len += sprint_Scsi_Cmnd (buffer, len, (Scsi_Cmnd *) hostdata->connected);
 675     }
 676 
 677     PRINTP("issue_queue\n");
 678 
 679     for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr;
 680                 ptr = (Scsi_Cmnd *) ptr->host_scribble)
 681         len += sprint_Scsi_Cmnd (buffer, len, ptr);
 682 
 683     PRINTP("disconnected_queue\n");
 684 
 685     for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr;
 686                 ptr = (Scsi_Cmnd *) ptr->host_scribble)
 687         len += sprint_Scsi_Cmnd (buffer, len, ptr);
 688         
 689     *start = buffer + offset;
 690     len -= offset;
 691     if (len > length)
 692             len = length;
 693     sti();
 694     return len;
 695 }
 696 
 697 #undef PRINTP
 698 #undef ANDP
 699 
 700 #ifdef MODULE
 701 /* Eventually this will go into an include file, but this will be later */
 702 Scsi_Host_Template driver_template = GENERIC_NCR5380;
 703 
 704 #include <linux/module.h>
 705 #include "scsi_module.c"
 706 #endif
/* */
root/drivers/scsi/g_NCR5380.c

DEFINITIONS
